US20120137644A1 - Telescoping of cutting deck - Google Patents
Telescoping of cutting deck Download PDFInfo
- Publication number
- US20120137644A1 US20120137644A1 US13/375,877 US200913375877A US2012137644A1 US 20120137644 A1 US20120137644 A1 US 20120137644A1 US 200913375877 A US200913375877 A US 200913375877A US 2012137644 A1 US2012137644 A1 US 2012137644A1
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- US
- United States
- Prior art keywords
- cutting deck
- assembly
- deck assembly
- main structure
- lawn mower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/81—Casings; Housings
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/64—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle
- A01D34/66—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle with two or more cutters
- A01D34/661—Mounting means
- A01D34/662—Mounting means to the front of the vehicle
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/82—Other details
Definitions
- the present invention relates to lawn mowers. More particularly, it relates to attaching the cutting deck assembly with the main structure of the lawn mower in a manner that facilitates service and maintenance processes.
- Lawn mowers utilize rapidly rotating blades for cutting vegetation or grass to an even height. Each blade has a separate housing, which forms a part of a cutting deck assembly of the lawn mower.
- the cutting deck assembly can be front-mounted, rear-mounted, or mid-mounted with respect to the main lawn mower body. Front-mounted mowers are usually preferred for improved stability, maneuverability, and mowing performance.
- Front-mounted cutting deck assembly of lawn mowers require regular servicing and maintenance for removing the vegetation or grass accumulated on the inside of the cutting deck, and further for cleaning and sharpening of the cutting blades.
- the part of the cutting deck assembly which needs to be serviced, i.e., the underside, is inaccessible in the operating position.
- the inaccessibility of parts in a cutting deck assembly makes the servicing and maintenance a time consuming and inconvenient process that requires a skilled operator to clean and repair the parts.
- the cutting deck assembly needs to be manually raised to an upright position with respect to the main structure of the lawn mower. This results in a time consuming and tedious process for the operator.
- the cutting deck assembly is usually raised using an elaborate linkage mechanism, which results in an anti-clockwise rotation of the cutting deck assembly.
- the cutting deck assembly is not completely lifted from the ground in the upright position.
- auxiliary wheels are needed to support the cutting deck assembly during the tilting procedure as well as in the raised position.
- the cutting deck assembly is often rigidly connected to the lawn mower. While some known cutting deck assemblies can be dismounted from the lawn mower, it is often time consuming to do so. Since, the cutting deck assembly cannot be separated from the main structure of the lawn mower, it is uneconomical for the users, as it is time consuming to clean the cutting deck assembly and it requires a skilled operator to clean and repair the cutting deck assembly parts.
- an objective is to provide a novel combination of cutting deck assembly with the lawn mower, which solves the problem of service and maintenance process of the lawn mower.
- the cutting deck assembly comprises an elongated attachment portion adapted for sliding engagement with the support member of the main structure to form a rigidly secured mounting of the cutting deck assembly to the main structure and to enable a sliding dismounting of the cutting deck assembly from the main structure. Since, the attachment portion of the cutting deck assembly can be easily detached from the main structure of the lawn mower, it is easy to process the cleaning and repair operation on the underside of the cutting deck assembly.
- the attachment portion includes first and second members, which are adapted to telescopically fit to corresponding holders on the support member of the main structure.
- the first and second members are secured to the corresponding holders of the support arm, by means of friction in the telescopic arrangement.
- the telescopic arrangement remains locked due to friction during the operation of the lawn mower, there is no need of any other locking mechanism to hold the cutting deck assembly with the main structure of the lawn mower.
- the first member 14 a and the second member 14 b are pivotable about a pivot axis. Moreover, the wheel assembly and the attachment portion of the cutting deck are also pivotable about the pivot axis of the cutting deck assembly.
- the first and second members are pivotable, they are able to fold up towards the ground and thus, act as stand support arms to bring the cutting deck assembly in an upright position. Further, the upright position provides a trouble-free accessibility to the cutting blades for cleaning and repair purposes.
- the cutting deck assembly comprises a pulley assembly and a cutter blade assembly.
- the pulley assembly receives a belt drive from the main structure of the lawn mower to drive the cutter blade assembly.
- the tension developed by a spring in the belt drive also contributes to the locking mechanism of the telescoping arrangement between the cutting deck assembly and the main structure of the lawn mower.
- the belt drive can be easily released, which will unlock the sliding engagement between the attachment portion of the cutting deck assembly and the support member of the main structure.
- the cutting deck assembly can be pulled out as a separate unit from the main structure of the lawn mower.
- the cleaning and repairing of the parts is easily done by virtue of maneuverability in terms of transportation and inspection.
- a completely separable cutting deck assembly is also advantageous in aspects of repair and maintenance of the main structure of the lawn mower.
- the cutting deck assembly comprises a wheel assembly, an outer frame and a top cover.
- the first member and the second member are rigidly secured to the wheel assembly and the outer frame.
- the wheel assembly is provided to avoid any damage to the cutting blades due to scalping, when the lawn mower is operating on an uneven surface.
- the outer frame and the top cover envelop the cutter blade assembly and the pulley assembly respectively.
- the top cover and the outer frame prevents the pulley assembly and the cutting blade assembly from any damage that may be cause by foreign objects such as stones, dust etc.
- the outer frame and the top cover provide an aesthetic look to the cutting deck assembly.
- the cutting deck assembly comprises a height adjustment assembly.
- the height adjustment assembly adjusts a cutting height of the cutter blade assembly.
- the cutter blade assembly may regulate its cutting height according to the need of the terrain.
- the height adjustment assembly comprises a lever portion and a sectored arrangement.
- the lever portion is utilized to set different cutting heights as required, by means of the sectored arrangement, which provides pre-defined positions for various cutting heights that can be attained by the cutting deck assembly.
- the lawn mower with front mounted cutting deck assembly has an inherent advantage as practically no resistance is imposed by any other part of the lawn mower while disengaging the cutting deck assembly. Also, use of a releasable sliding engagement between the cutting deck assembly and the main structure saves time, labor and money involved in the cleaning or maintenance processes. Further, the releasable sliding engagement between the cutting deck assembly and the main structure also enables an easy re-mounting of the cutting deck assembly after cleaning, service or replacement. Moreover, the described arrangement of the cutting deck assembly with the lawn mower provides a valuable economic impact on the business of lawn mowers.
- FIG. 1 shows a perspective view of a lawn mower, according to an embodiment of the present invention.
- FIG. 2 shows a perspective view of a cutting deck assembly of the lawn mower, according to an embodiment of the present invention.
- FIG. 1 shows a perspective view of a lawn mower 1 , according to an embodiment of the present invention.
- the lawn mower 1 is a ride-on lawn mower having a movement in the forward direction.
- the lawn mower 1 comprises a main structure 2 and a front mounted cutting deck assembly 3 .
- the main structure 2 of the lawn mower 1 comprises an operator chair, an engine assembly and a set of four wheels.
- the engine assembly is used to drive the rear wheels of the lawn mower 1 through a preferred transmission mechanism (not shown).
- the other components such as steering wheel, control panel (not shown), foot pedals and other necessary parts are provided at preferred locations on the main structure 2 to facilitate easy accessibility to an operator sitting, on the operator chair.
- the other components in the main structure 2 are positioned to achieve stability and efficiency during the operating and idle states of the lawn mower 1 .
- only a front portion of the main structure 2 is shown in the FIG. 1 and other parts such as operator chair, engine assembly, rear wheels, steering wheel, control panel and foot pedals etc are omitted for the sake of clarity.
- the main structure 2 of the lawn mower 1 further comprises an elongated support member 4 , which is connected to a chassis 5 of the lawn mower 1 .
- the support member 4 holds the cutting deck assembly 3 in an operable position.
- the main structure 2 also comprises a receptacle portion 6 to direct a belt drive 7 to the cutting deck assembly 3 .
- the cutting deck assembly 3 comprises an elongated attachment portion 8 .
- the attachment portion 8 of the cutting deck assembly 3 is adapted to have a sliding engagement with the support member 4 of the main structure 2 .
- the attachment portion 8 facilitates a rigidly secured mounting of the cutting deck assembly 3 with the support member 4 of the main structure 2 .
- the presence of the sliding engagement between the attachment portion 8 and the support member 4 enables the cutting deck assembly 3 to remain attached to the main structure 2 during operating conditions. Moreover, the sliding engagement between the attachment portion 8 and the support member 4 also enables a sliding dismounting of the cutting deck assembly 3 from the main structure 2 of the lawn mower 1 .
- the cutting deck assembly 3 further comprises a pulley assembly 9 and a cutting blade assembly 10 .
- the pulley assembly 9 is operable to receive the belt drive 7 from the receptacle portion 6 of the lawn mower 1 to drive the cutting blade assembly 10 .
- the pulley assembly 9 and the cutting blade assembly 10 are supported on a chassis of the cutting deck assembly 3 such that one or more cutting blades (not shown) are provided in the cutting blade assembly 10 underneath the cutting deck assembly 3 .
- the cutting deck assembly 3 of the lawn mower 1 can be symmetric or asymmetric depending on the applications and design criterion of the lawn mower 1 . However, incase of the asymmetric cutting deck assembly 3 the cutting blades need not be synchronized for operation.
- the cutting deck assembly 3 further comprises a top cover that envelopes the cutting blade assembly 10 and protects it from any foreign objects such as dust, stones etc. For the sake of clarity, top cover is omitted from the FIG. 1 .
- the belt drive 7 which is engaged with the pulley assembly 9 and the cutting blade assembly 10 , holds the cutting deck assembly 3 and the main structure 2 together by ensuring the precise mounting of the attachment portion 8 with the support member 4 . Further, the belt drive 7 can be easily released, and thus unlocks the sliding engagement between the attachment portion 8 of the cutting deck assembly 3 and the support member 4 of the main structure 2 .
- the cutting deck assembly 3 can be pulled out as a separate unit from the main structure 2 of the lawn mower 1 , which facilitates the cleaning and repairing of the parts by virtue of maneuverability in terms of transportation and inspection.
- a completely separable cutting deck assembly 3 is also advantageous in aspects of repair and maintenance of the main structure 2 of the lawn mower 1 .
- lawn mower 1 with front mounted cutting deck assembly 3 has an inherent advantage as practically no resistance is imposed by any other part of the lawn mower 1 while disengaging the cutting deck assembly 3 .
- use of a releasable sliding engagement between the cutting deck assembly 3 and the main structure 2 saves time, labor and money involved in the cleaning or maintenance processes.
- the releasable sliding engagement between the cutting deck assembly 3 and the main structure 2 also enables an easy re-mounting of the cutting deck assembly 3 after cleaning, service or replacement.
- FIG. 2 shows a perspective view of the cutting deck assembly 3 , according to an embodiment of the present invention.
- the cutting deck assembly 3 comprises a wheel assembly 11 , which includes a pair of wheels to avoid scalping of the ground when the lawn mower 1 moves over uneven surfaces during operation.
- the cutting deck assembly 3 further comprises an outer frame 12 and a top cover 13 .
- the outer frame 12 and the top cover 13 envelopes the cutting blade assembly 10 the pulley assembly 9 to prevent the pulleys and the blades from any harm or damage due to foreign objects such as dust, stone etc.
- the outer frame 12 and the top cover 13 are supported, on the chassis of the cutting deck assembly 3 .
- the attachment portion 8 of the cutting deck assembly 3 further comprises: a first member 14 a and a second member 14 b.
- the first member 14 a and the second member 14 b are rigidly secured to the wheel assembly 11 and the outer frame 12 of the cutting deck assembly 3 .
- the first member 14 a and the second member 14 b are the elongated part of the attachment portion 8 of the cutting deck assembly 3 .
- the support member 4 of the main structure 2 also comprises elongated parts: a first holder 15 a and a second holder 15 b (shown in FIG. 1 ).
- the first and second members 14 a and 14 b of the cutting deck assembly 3 fit telescopically with the first and second holders 15 a and 15 b respectively of the main structure 2 to enable a rigid mounting structure.
- the first and second members 14 a and 14 b are utilized as stand support arms for bringing the cutting deck assembly 3 to an upright position, after dismounting the cutting deck assembly 3 from the main structure 2 .
- the whole structure of the attachment portion 8 including wheel assembly 11 , first and second members 14 a and 14 b, is pivotable about a pivot axis (X 1 ) (the pivot axis is shown in FIG. 1 ) in the cutting deck assembly 3 . Since, the whole structure is pivotable, the first and second members 14 a and 14 b can fold out towards the ground to work as stand support arms for the dismounted cutting deck assembly 3 .
- separate stand support arm(s) may be provided to hold the cutting deck assembly 3 in the upright position.
- the upright position provides a trouble-free accessibility to the cutting blades for cleaning and repair purposes.
- a spring (not shown) that holds the belt drive develops sufficient tension to maintain the telescopic fitting between secured in place during operation of the lawn mower 10 .
- the friction in the telescoping fitting also contributes to maintain a rigid mounting of the attachment portion 8 with the support arm 4 of the main structure 2 .
- a locking mechanism may also be provided in the first member 14 a and the second member 14 b to hold the respective holders 15 a and 15 b and thus maintain the cutting deck assembly 3 and the main structure 2 in a locked position during operation.
- a mechanism may also be provided to loosen the belt drive 7 , for example, allowing a slight displacement in the pulley assembly 9 that may release the belt drive 7 and thus the telescoping fit can be disengaged without the need of complex and expensive tools.
- the cutting deck assembly 3 is also provided with some easy gripping members such as handles (not shown) at appropriate locations to facilitate an easy pulling of the cutting deck assembly 3 .
- the cutting deck assembly 3 also comprises a height adjustment assembly 16 .
- the height adjustment assembly comprises a lever portion 17 and a sectored arrangement 18 .
- the height adjustment assembly 16 is utilized to adjust a cutting height of the cutter blade assembly 10 .
- the cutting height may be pre-defined for various terrains such as lawns, hilly areas, slope terrains etc.
- the sectored arrangement 18 provides various positions defining pre-defined cutting heights, which can be fixed for the cutter blade assembly 10 by means of the lever portion 17 .
- the time to reassemble the cutting deck assembly 3 with the main structure 2 is also reduced to a great extent.
- the simplicity of the sliding engagement of the cutting deck assembly 3 and the main structure 2 by means of the telescopic arrangement, enables reduced production time and can have a valuable economic impact on the business of lawn mowers.
Abstract
The invention relates to an attachment of the cutting deck assembly (3) with a main structure (2) of the lawn mower (1), to allow an easy disengagement of the cutting deck assembly (3) for cleaning and maintenance processes. A ride-on lawn mower (1) comprising a main structure (2) and a front mounted cutting deck assembly (3), wherein the main structure (2) comprises an elongated support member (4) for supporting the cutting deck assembly (3) in an operable position, characterized in that the cutting deck assembly (3) comprises an elongated attachment portion (8) adapted for sliding engagement with the support member (4) of the main structure (2) to form a rigidly secured mounting of the cutting deck assembly (3) to the main structure (2) and to enable a sliding dismounting of the cutting deck assembly (3) from the main structure (2).
Description
- The present invention relates to lawn mowers. More particularly, it relates to attaching the cutting deck assembly with the main structure of the lawn mower in a manner that facilitates service and maintenance processes.
- Lawn mowers utilize rapidly rotating blades for cutting vegetation or grass to an even height. Each blade has a separate housing, which forms a part of a cutting deck assembly of the lawn mower. The cutting deck assembly can be front-mounted, rear-mounted, or mid-mounted with respect to the main lawn mower body. Front-mounted mowers are usually preferred for improved stability, maneuverability, and mowing performance.
- Front-mounted cutting deck assembly of lawn mowers require regular servicing and maintenance for removing the vegetation or grass accumulated on the inside of the cutting deck, and further for cleaning and sharpening of the cutting blades. However, the part of the cutting deck assembly, which needs to be serviced, i.e., the underside, is inaccessible in the operating position. The inaccessibility of parts in a cutting deck assembly makes the servicing and maintenance a time consuming and inconvenient process that requires a skilled operator to clean and repair the parts.
- To facilitate serviceability and the cleaning process of the cutting deck assembly, various tilting cutting deck assemblies have been proposed. In one proposed tilting deck system, the cutting deck assembly needs to be manually raised to an upright position with respect to the main structure of the lawn mower. This results in a time consuming and tedious process for the operator. In another related art, the cutting deck assembly is usually raised using an elaborate linkage mechanism, which results in an anti-clockwise rotation of the cutting deck assembly. However, the cutting deck assembly is not completely lifted from the ground in the upright position. Thus, auxiliary wheels are needed to support the cutting deck assembly during the tilting procedure as well as in the raised position.
- Moreover, in tilting deck systems the cutting deck assembly is often rigidly connected to the lawn mower. While some known cutting deck assemblies can be dismounted from the lawn mower, it is often time consuming to do so. Since, the cutting deck assembly cannot be separated from the main structure of the lawn mower, it is uneconomical for the users, as it is time consuming to clean the cutting deck assembly and it requires a skilled operator to clean and repair the cutting deck assembly parts.
- Therefore, there is a need for an improved way of attaching the cutting deck assembly with the lawn mower structure to facilitate servicing and maintenance processes of the cutting deck assembly.
- In view of the above, the object of this invention is to solve or at least reduce the problems discussed above. In particular, an objective is to provide a novel combination of cutting deck assembly with the lawn mower, which solves the problem of service and maintenance process of the lawn mower.
- This is achieved with a removably secured attachment of the cutting deck assembly with the lawn mower according to the preamble of claim 1, in which the cutting deck assembly comprises an elongated attachment portion adapted for sliding engagement with the support member of the main structure to form a rigidly secured mounting of the cutting deck assembly to the main structure and to enable a sliding dismounting of the cutting deck assembly from the main structure. Since, the attachment portion of the cutting deck assembly can be easily detached from the main structure of the lawn mower, it is easy to process the cleaning and repair operation on the underside of the cutting deck assembly.
- According to the
claim 2, the attachment portion includes first and second members, which are adapted to telescopically fit to corresponding holders on the support member of the main structure. The first and second members are secured to the corresponding holders of the support arm, by means of friction in the telescopic arrangement. In an aspect of the invention, since the telescopic arrangement remains locked due to friction during the operation of the lawn mower, there is no need of any other locking mechanism to hold the cutting deck assembly with the main structure of the lawn mower. - According to
claim 3, thefirst member 14 a and thesecond member 14 b are pivotable about a pivot axis. Moreover, the wheel assembly and the attachment portion of the cutting deck are also pivotable about the pivot axis of the cutting deck assembly. In an aspect of the present invention, since the first and second members are pivotable, they are able to fold up towards the ground and thus, act as stand support arms to bring the cutting deck assembly in an upright position. Further, the upright position provides a trouble-free accessibility to the cutting blades for cleaning and repair purposes. - According to the
claim 4, the cutting deck assembly comprises a pulley assembly and a cutter blade assembly. The pulley assembly receives a belt drive from the main structure of the lawn mower to drive the cutter blade assembly. In an aspect of the invention, the tension developed by a spring in the belt drive also contributes to the locking mechanism of the telescoping arrangement between the cutting deck assembly and the main structure of the lawn mower. - Further, the belt drive can be easily released, which will unlock the sliding engagement between the attachment portion of the cutting deck assembly and the support member of the main structure. Thus, the cutting deck assembly can be pulled out as a separate unit from the main structure of the lawn mower. In an aspect of the invention, since the cutting deck assembly is completely separated from the main structure, the cleaning and repairing of the parts is easily done by virtue of maneuverability in terms of transportation and inspection. Moreover, a completely separable cutting deck assembly is also advantageous in aspects of repair and maintenance of the main structure of the lawn mower.
- According to claim 5, the cutting deck assembly comprises a wheel assembly, an outer frame and a top cover. The first member and the second member are rigidly secured to the wheel assembly and the outer frame. In an aspect of the invention, the wheel assembly is provided to avoid any damage to the cutting blades due to scalping, when the lawn mower is operating on an uneven surface.
- According to
claim 6, the outer frame and the top cover envelop the cutter blade assembly and the pulley assembly respectively. In an aspect of the invention, the top cover and the outer frame prevents the pulley assembly and the cutting blade assembly from any damage that may be cause by foreign objects such as stones, dust etc. In a further aspect of the invention, the outer frame and the top cover provide an aesthetic look to the cutting deck assembly. - According to the claim 7, the cutting deck assembly comprises a height adjustment assembly. The height adjustment assembly adjusts a cutting height of the cutter blade assembly. In an aspect of the invention, the cutter blade assembly may regulate its cutting height according to the need of the terrain.
- According to
claim 8, the height adjustment assembly comprises a lever portion and a sectored arrangement. The lever portion is utilized to set different cutting heights as required, by means of the sectored arrangement, which provides pre-defined positions for various cutting heights that can be attained by the cutting deck assembly. - In an overall aspect of the invention, the lawn mower with front mounted cutting deck assembly has an inherent advantage as practically no resistance is imposed by any other part of the lawn mower while disengaging the cutting deck assembly. Also, use of a releasable sliding engagement between the cutting deck assembly and the main structure saves time, labor and money involved in the cleaning or maintenance processes. Further, the releasable sliding engagement between the cutting deck assembly and the main structure also enables an easy re-mounting of the cutting deck assembly after cleaning, service or replacement. Moreover, the described arrangement of the cutting deck assembly with the lawn mower provides a valuable economic impact on the business of lawn mowers.
- The invention will be described in more detail in the following, with reference to the enclosed drawings in which:
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FIG. 1 shows a perspective view of a lawn mower, according to an embodiment of the present invention; and -
FIG. 2 shows a perspective view of a cutting deck assembly of the lawn mower, according to an embodiment of the present invention. - The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, like numbers refer to like references.
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FIG. 1 shows a perspective view of a lawn mower 1, according to an embodiment of the present invention. In an embodiment of the present invention, the lawn mower 1 is a ride-on lawn mower having a movement in the forward direction. The lawn mower 1 comprises amain structure 2 and a front mounted cuttingdeck assembly 3. Themain structure 2 of the lawn mower 1 comprises an operator chair, an engine assembly and a set of four wheels. The engine assembly is used to drive the rear wheels of the lawn mower 1 through a preferred transmission mechanism (not shown). Moreover the other components such as steering wheel, control panel (not shown), foot pedals and other necessary parts are provided at preferred locations on themain structure 2 to facilitate easy accessibility to an operator sitting, on the operator chair. Depending on the application and design constraints of the lawn mower 1, the other components in themain structure 2 are positioned to achieve stability and efficiency during the operating and idle states of the lawn mower 1. However, only a front portion of themain structure 2 is shown in theFIG. 1 and other parts such as operator chair, engine assembly, rear wheels, steering wheel, control panel and foot pedals etc are omitted for the sake of clarity. - As shown in the
FIG. 1 , themain structure 2 of the lawn mower 1 further comprises anelongated support member 4, which is connected to a chassis 5 of the lawn mower 1. Thesupport member 4 holds the cuttingdeck assembly 3 in an operable position. Themain structure 2 also comprises areceptacle portion 6 to direct a belt drive 7 to the cuttingdeck assembly 3. Further, the cuttingdeck assembly 3 comprises anelongated attachment portion 8. Theattachment portion 8 of the cuttingdeck assembly 3 is adapted to have a sliding engagement with thesupport member 4 of themain structure 2. Theattachment portion 8 facilitates a rigidly secured mounting of the cuttingdeck assembly 3 with thesupport member 4 of themain structure 2. Moreover, the presence of the sliding engagement between theattachment portion 8 and thesupport member 4 enables the cuttingdeck assembly 3 to remain attached to themain structure 2 during operating conditions. Moreover, the sliding engagement between theattachment portion 8 and thesupport member 4 also enables a sliding dismounting of the cuttingdeck assembly 3 from themain structure 2 of the lawn mower 1. - As shown in the
FIG. 1 , the cuttingdeck assembly 3 further comprises apulley assembly 9 and acutting blade assembly 10. Thepulley assembly 9 is operable to receive the belt drive 7 from thereceptacle portion 6 of the lawn mower 1 to drive the cuttingblade assembly 10. Thepulley assembly 9 and thecutting blade assembly 10 are supported on a chassis of the cuttingdeck assembly 3 such that one or more cutting blades (not shown) are provided in thecutting blade assembly 10 underneath the cuttingdeck assembly 3. Moreover, the cuttingdeck assembly 3 of the lawn mower 1 can be symmetric or asymmetric depending on the applications and design criterion of the lawn mower 1. However, incase of the asymmetriccutting deck assembly 3 the cutting blades need not be synchronized for operation. The cuttingdeck assembly 3 further comprises a top cover that envelopes thecutting blade assembly 10 and protects it from any foreign objects such as dust, stones etc. For the sake of clarity, top cover is omitted from theFIG. 1 . - In an embodiment of the present invention, the belt drive 7, which is engaged with the
pulley assembly 9 and thecutting blade assembly 10, holds the cuttingdeck assembly 3 and themain structure 2 together by ensuring the precise mounting of theattachment portion 8 with thesupport member 4. Further, the belt drive 7 can be easily released, and thus unlocks the sliding engagement between theattachment portion 8 of the cuttingdeck assembly 3 and thesupport member 4 of themain structure 2. Thus, the cuttingdeck assembly 3 can be pulled out as a separate unit from themain structure 2 of the lawn mower 1, which facilitates the cleaning and repairing of the parts by virtue of maneuverability in terms of transportation and inspection. Moreover, a completely separable cuttingdeck assembly 3 is also advantageous in aspects of repair and maintenance of themain structure 2 of the lawn mower 1. - Moreover, lawn mower 1 with front mounted cutting
deck assembly 3 has an inherent advantage as practically no resistance is imposed by any other part of the lawn mower 1 while disengaging the cuttingdeck assembly 3. Also, use of a releasable sliding engagement between the cuttingdeck assembly 3 and themain structure 2 saves time, labor and money involved in the cleaning or maintenance processes. The releasable sliding engagement between the cuttingdeck assembly 3 and themain structure 2 also enables an easy re-mounting of the cuttingdeck assembly 3 after cleaning, service or replacement. -
FIG. 2 shows a perspective view of the cuttingdeck assembly 3, according to an embodiment of the present invention. As shown in theFIG. 2 , the cuttingdeck assembly 3 comprises awheel assembly 11, which includes a pair of wheels to avoid scalping of the ground when the lawn mower 1 moves over uneven surfaces during operation. The cuttingdeck assembly 3 further comprises anouter frame 12 and atop cover 13. Theouter frame 12 and thetop cover 13 envelopes thecutting blade assembly 10 thepulley assembly 9 to prevent the pulleys and the blades from any harm or damage due to foreign objects such as dust, stone etc. Theouter frame 12 and thetop cover 13 are supported, on the chassis of the cuttingdeck assembly 3. - As shown in
FIG. 2 , theattachment portion 8 of the cuttingdeck assembly 3 further comprises: afirst member 14 a and asecond member 14 b. Thefirst member 14 a and thesecond member 14 b are rigidly secured to thewheel assembly 11 and theouter frame 12 of the cuttingdeck assembly 3. Thefirst member 14 a and thesecond member 14 b are the elongated part of theattachment portion 8 of the cuttingdeck assembly 3. Correspondingly, thesupport member 4 of themain structure 2 also comprises elongated parts: afirst holder 15 a and a second holder 15 b (shown inFIG. 1 ). The first andsecond members deck assembly 3 fit telescopically with the first andsecond holders 15 a and 15 b respectively of themain structure 2 to enable a rigid mounting structure. - In an embodiment of the present invention, the first and
second members deck assembly 3 to an upright position, after dismounting the cuttingdeck assembly 3 from themain structure 2. The whole structure of theattachment portion 8, includingwheel assembly 11, first andsecond members FIG. 1 ) in the cuttingdeck assembly 3. Since, the whole structure is pivotable, the first andsecond members deck assembly 3. In another embodiment of the present invention, separate stand support arm(s) may be provided to hold the cuttingdeck assembly 3 in the upright position. In an aspect of the present invention, the upright position provides a trouble-free accessibility to the cutting blades for cleaning and repair purposes. - In an embodiment of the present invention, a spring (not shown) that holds the belt drive develops sufficient tension to maintain the telescopic fitting between secured in place during operation of the
lawn mower 10. Moreover, the friction in the telescoping fitting also contributes to maintain a rigid mounting of theattachment portion 8 with thesupport arm 4 of themain structure 2. In another embodiment of the present invention, a locking mechanism may also be provided in thefirst member 14 a and thesecond member 14 b to hold therespective holders 15 a and 15 b and thus maintain the cuttingdeck assembly 3 and themain structure 2 in a locked position during operation. Further, a mechanism may also be provided to loosen the belt drive 7, for example, allowing a slight displacement in thepulley assembly 9 that may release the belt drive 7 and thus the telescoping fit can be disengaged without the need of complex and expensive tools. Moreover, the cuttingdeck assembly 3 is also provided with some easy gripping members such as handles (not shown) at appropriate locations to facilitate an easy pulling of the cuttingdeck assembly 3. - As shown in the
FIG. 2 , the cuttingdeck assembly 3 also comprises aheight adjustment assembly 16. The height adjustment assembly comprises alever portion 17 and asectored arrangement 18. Theheight adjustment assembly 16 is utilized to adjust a cutting height of thecutter blade assembly 10. In an embodiment of the present invention, the cutting height may be pre-defined for various terrains such as lawns, hilly areas, slope terrains etc. Thesectored arrangement 18 provides various positions defining pre-defined cutting heights, which can be fixed for thecutter blade assembly 10 by means of thelever portion 17. - In an overall embodiment of the present invention, the time to reassemble the cutting
deck assembly 3 with themain structure 2 is also reduced to a great extent. Moreover, the simplicity of the sliding engagement of the cuttingdeck assembly 3 and themain structure 2, by means of the telescopic arrangement, enables reduced production time and can have a valuable economic impact on the business of lawn mowers. - In the drawings and specifications, there have been disclosed preferred embodiments and examples of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for the purpose of limitation, the scope of the invention being set forth in the following claims.
-
- Lawn-mower 1
-
Main structure 2 - Cutting
deck assembly 3 -
Elongated support member 4 - Chassis 5
-
Receptacle portion 6 - Belt drive 7
- Elongated attachment portion B
-
Pulley assembly 9 - Cutting
blade assembly 10 -
Wheel assembly 11 -
Outer frame 12 -
Top cover 13 -
First member 14 a -
Second member 14 b -
First holder 15 a - Second holder 15 b
-
Height adjustment assembly 16 -
Lever portion 17 -
Sectored arrangement 18 - Pivot axis (X1)
Claims (15)
1-8. (canceled)
9. A ride-on lawn mower comprising:
a main structure;
a front mounted cutting deck assembly;
a belt drive; and
a pulley assembly,
wherein the main structure comprises an elongated support member for supporting the cutting deck assembly in an operable position,
wherein the cutting deck assembly comprises an elongated attachment portion adapted for sliding engagement with the support member of the main structure to form a rigidly secured mounting of the cutting deck assembly to the main structure and to enable a sliding dismounting of the cutting deck assembly from the main structure, and
wherein engagement of the belt drive with the pulley assembly holds the cutting deck assembly and the main structure together.
10. The ride-on lawn mower of claim 9 , wherein the elongated attachment portion comprises a first member and a second member, and wherein the first member and the second member are tailored to telescopically fit to corresponding holders on the elongated support member.
11. The ride-on lawn mower of claim 10 , wherein the first member and the second member are pivotable about a pivot axis and wherein the first member and the second member act as stand support arms for the dismounted cutting deck assembly.
12. The ride-on lawn mower of claim 9 , wherein the pulley assembly is able to receive the belt drive from the main structure to drive a cutting blade assembly.
13. The ride-on lawn mower of claim 9 , wherein the cutting deck assembly further comprises a wheel assembly, an outer frame, and a top cover.
14. The ride-on lawn mower of claim 13 , wherein the outer frame and the top cover envelop a cutting blade assembly and the pulley assembly respectively.
15. The ride-on lawn mower of claim 9 , wherein the cutting deck assembly further comprises a height adjustment assembly and wherein the height adjustment assembly adjusts a cutting height of a cutting blade assembly.
16. The ride-on lawn mower of claim 15 , wherein the height adjustment assembly comprises a lever portion and a sectored arrangement and wherein the sectored arrangement provides pre-defined positions defining various cutting heights for the cutting blade assembly.
17. The ride-on lawn mower of claim 9 , wherein releasing the belt drive unlocks the sliding engagement between the attachment portion of the cutting deck assembly and the support member of the main structure and allows for the sliding dismounting of the cutting deck assembly from the main structure.
18. The ride-on lawn mower of claim 9 , wherein the cutting deck assembly and the main structure are held together only by engagement of the belt drive with the pulley assembly and friction between the attachment portion of the cutting deck assembly and the support member of the main structure.
19. The ride-on lawn mower of claim 9 , further comprising:
a spring that creates sufficient tension in the belt drive to rigidly secure mounting of the cutting deck assembly to the main structure.
20. The ride-on lawn mower of claim 9 , wherein the cutting deck assembly comprises gripping members to facilitate pulling of the cutting deck assembly when slidingly dismounting the cutting deck from the main structure.
21. The ride-on lawn mower of claim 9 , further comprising:
a mechanism that allows an operator to, without external tools, displace at least a portion of the pulley assembly to release the belt drive and disengage the attachment portion of the cutting deck assembly and the support member of the main structure.
22. A ride-on lawn mower comprising:
a main structure; and
a front mounted cutting deck assembly,
wherein the main structure comprises an elongated support member for supporting the cutting deck assembly in an operable position,
wherein the cutting deck assembly comprises an elongated attachment portion adapted for sliding engagement with the support member of the main structure to form a rigidly secured mounting of the cutting deck assembly to the main structure and to enable a sliding dismounting of the cutting deck assembly from the main structure,
wherein a first member and a second member of the elongated attachment portion are pivotable about a pivot axis, and
wherein the first member and the second member act as stand support arms for the dismounted cutting deck assembly.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE2009/050644 WO2010140932A1 (en) | 2009-06-02 | 2009-06-02 | Telescoping of cutting deck |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120137644A1 true US20120137644A1 (en) | 2012-06-07 |
Family
ID=43297920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/375,877 Abandoned US20120137644A1 (en) | 2009-06-02 | 2009-06-02 | Telescoping of cutting deck |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120137644A1 (en) |
EP (1) | EP2445331B1 (en) |
CN (1) | CN102802401A (en) |
AU (1) | AU2009347244B2 (en) |
WO (1) | WO2010140932A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160007529A1 (en) * | 2014-07-14 | 2016-01-14 | Deere & Company | Mower spindle brake disengagement mechanism |
IT202100018350A1 (en) * | 2021-07-12 | 2023-01-12 | Ma Ri Na Systems S R L | LAWNMOWER MACHINE |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2887791B1 (en) * | 2012-08-24 | 2018-11-28 | Husqvarna Ab | Implement coupling arrangement |
CN109526402A (en) * | 2018-12-06 | 2019-03-29 | 宁波朗辉工具有限公司 | A kind of grass trimmer Collapsible chassis |
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- 2009-06-02 CN CN2009801596705A patent/CN102802401A/en active Pending
- 2009-06-02 WO PCT/SE2009/050644 patent/WO2010140932A1/en active Application Filing
- 2009-06-02 US US13/375,877 patent/US20120137644A1/en not_active Abandoned
- 2009-06-02 AU AU2009347244A patent/AU2009347244B2/en active Active
- 2009-06-02 EP EP09845602.3A patent/EP2445331B1/en active Active
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US2680946A (en) * | 1950-11-28 | 1954-06-15 | Merlin E Rousey | Mower attachment for tractors |
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US20160007529A1 (en) * | 2014-07-14 | 2016-01-14 | Deere & Company | Mower spindle brake disengagement mechanism |
US9743585B2 (en) * | 2014-07-14 | 2017-08-29 | Deere & Company | Mower spindle brake disengagement mechanism |
IT202100018350A1 (en) * | 2021-07-12 | 2023-01-12 | Ma Ri Na Systems S R L | LAWNMOWER MACHINE |
EP4118946A1 (en) * | 2021-07-12 | 2023-01-18 | MA.RI.NA Systems S.r.l. | Lawn mower |
Also Published As
Publication number | Publication date |
---|---|
EP2445331A1 (en) | 2012-05-02 |
AU2009347244B2 (en) | 2015-07-09 |
EP2445331B1 (en) | 2018-07-18 |
EP2445331A4 (en) | 2016-12-21 |
AU2009347244A1 (en) | 2012-01-12 |
CN102802401A (en) | 2012-11-28 |
WO2010140932A1 (en) | 2010-12-09 |
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Legal Events
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AS | Assignment |
Owner name: HUSQVARNA AB, SWEDEN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CARLSSON, DANIEL;SPANG, JOAKIM;SCHYGGE, SEBASTIAN;AND OTHERS;SIGNING DATES FROM 20111129 TO 20120131;REEL/FRAME:027740/0686 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION |